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https://issues.apache.org/jira/browse/HDFS-15889?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Haiyang Hu updated HDFS-15889:
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Description: Consider limit the number of concurrent EC Reconstruct blocks
in NameNode to avoid a situation where a large number of DataNode offline case
a large number of EC block Reconstruct, that leads to high cluster disk IO and
network load in the cluster
> Erasure Coding: Limit the number of concurrent EC Reconstruct blocks in
> NameNode
> --------------------------------------------------------------------------------
>
> Key: HDFS-15889
> URL: https://issues.apache.org/jira/browse/HDFS-15889
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Haiyang Hu
> Priority: Major
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Consider limit the number of concurrent EC Reconstruct blocks in NameNode to
> avoid a situation where a large number of DataNode offline case a large
> number of EC block Reconstruct, that leads to high cluster disk IO and
> network load in the cluster
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